## Precalculus (6th Edition) Blitzer

a) The order of the matrix is $2\times 3$. b) The identification of the element ${{a}_{32}}$ is not possible because of ${{a}_{23}}=-1$.
(a) Since this matrix has two rows and three columns, therefore, the order of the matrix is $2\times 3$ The order of the matrix $A$ is $2\times 3$. (b) The notation ${{a}_{23}}$ stands for the element present in the second row and third column of the given matrix. Therefore ${{a}_{23}}=-1$ Since there are only two rows, therefore, the element ${{a}_{32}}$ present in the third row can never be identified. Hence, the identification of the element ${{a}_{32}}$ is not possible because of ${{a}_{23}}=-1$.